Centrifugal block-machine.



M. Mmmm.

OBNTBIFUGAL BLoK MACHINE- Arrmnmnnr Hmm run. s, 190s.

Patented oct. a los.

MEMO.:NASnoLn,-iori.-DAVIS JlINefrIoN, InLrN'ors.

i, No. 900,414..

ppleationfle The object of this invention is yto impart a centrifugal movement to a mold or molds containing a concrete mixture vwhich will thoroughly and uniformly paclr the mixture.

ln the accompanying drawings, Figure 1 is an end elevation of my improved centrifugal block machine. Fig. 2 is a, vertical central section. Fig. 3 is a perspectiveview of a mold and the pallet support. Fig. Llis a perspective view of the mold in its' open position showing the pallet and its support. Fig. 5 is a pers ective view of the pallet and a concrete bloc thereon.

The drum 1 has a center transverse partition 2, and is-supported by a shaft 3 exv tending in the lengthwise direction of the drum. The shaft 3 is supported by two stands 4, only one being shown, one located at each end of the drum, a. pulley 5 has a connection with the shaft and is rotated by a belt connection with a suitable driver.

To the inner face ofthe drum are secured pallet supports 6, in this instance three ea'ch side of the tranverse artition, but a greater or less number may to the size of the drum, and the size ofthe supports. Each support, the mold and 1 ballet for each sup ort being the same, a description of one wi l answer.

To the transverse art1t1on 1s permanently secured the back wal 7 of a mold, and to th1s back :wall are` hinged ends 8 and 9. They .front 1.0 of the mold is hinged tothe end 8,

and the free end oll the front is detachably connected to the free end of the end 9 by the clasp 11. The ends and the front are supported to move over the pallet support 6. A pallet 12 is of a size to fit within the mold and has-two holes 13 in its underlace which communicates with the grooves 14 in the pallet support. A top 15 is of a size and form to iit closely within the open end of the mold. To the top at each end thereof e provided. according ratneagloct; e, mes.'

is pivoted a catch 16 which has a hook 1-7, -a handle 18 and a projecting portion .19. A plate spring 2() is secured to the center of the top, its free ends resting beneath the projecting portions 19 of the' catches. The

ends '8 and 9 of the mold are provided with saw-toothed notches 21 arranged in a vertical series.

ln use, the allet is placed irl-position within the mold, t e ends and front ci the mold are folded around the pallet and locked together. Moistened concrete mixture is placed -in the mold and leveled olf even with the o en end of the mold. The top 15 is then the plate spring 20 will hold the catches in engagement with the ends of the mold.

After the other molds are thus filled and closed, the drum is rotated, which will throw the concrete outward, thereby packing it close within the mold. This centrifugal force will also move the to to the meld a einst the concrete, as it pac s in the mold. Tie catches 16 will engage the notches 21 and hold the to from dropping out as the drum rotates. ter the drum has been rotated. to pack the cement in the molds, the 'drum is stopped from rotating, and the tops removed from'the molds, the molds are then o ened and the pallets with the cfmcrete b ocks in position thereon removed from their sup orts by hooks entering the holes in the un erside thereof. New pallets are inserted in place, the molds closed and the operations repeated. By revolving the molds, all tamping of the concrete is dispensed with.

claim as` my invention. -1. A centrifugal block machine, compris-- ing a rotatable drum, a mold located in the drum having one side secured. to the drum, and other sections movable, a movable pallet and a stationary palletsupport.

2. -A centrifugal block machine, compris'- ing a rotatable drum, arnold located. in the drum having one side secured to the drum and other sections movable, a movable allet, a stationary pallet sup ort, a removable ortion for the o en end o the mold, and se adjustable cate es for the removable portion.

3. A. centrifugal block machine comprising a rotatable dt'm, a. mold located in the my hand in presence of two subscribing witdrum having one side secured to the drum nesses. and other sections movable, a. movable allet,

a stationary pallet support, a removab e por- MEN ZO NASHOLD' 5 tion for the qln end of the mold, and spring Witnesses:

operated cate 'es for the removable portion. A. O. BEHEL In testimony whereof I have hereunto s'et E. D. E. N EHEL. 

